IP Address Lookup

What is behind an IP address?

Lookup the holder and contact information of a given IP-address.
This tool returns the registered IP address block together with information of the holder and contact information.
IP addresses are administered and registered by different Network Coordination Centres (NCC), depending on the global region of the applicant.

APNIC - Asia/Pacific Region

LACNIC - Latin America and some Caribbean Islands

AfriNIC - Africa Region

AfriNIC is a non-government, not-for-profit, membership based organization, based in Mauritius to serve African Internet Community.
AfriNIC is the Regional Registry for Internet Number Resources for Africa.
http://www.afrinic.net

Reserved for Private-Use Networks

The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private internets:

10.0.0.0 - 10.255.255.255 (10/8 prefix)

172.16.0.0 - 172.31.255.255 (172.16/12 prefix)

192.168.0.0 - 192.168.255.255 (192.168/16 prefix)

The first block is refered to as "24-bit block", the second as "20-bit block", and to the third as "16-bit" block.
Note that (in pre-CIDR notation) the first block is nothing but a single class A network number,
while the second block is a set of 16 contiguous class B network numbers,
and third block is a set of 256 contiguous class C network numbers.